RMAN in 12c: The Next Generation (PPT)
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The document presents an overview of RMAN in Oracle 12c, detailing its capabilities for backup and recovery within multitenant architecture, including pluggable databases. It highlights features like sysbackup privilege, SQL interface improvements, and active database duplication, while emphasizing the importance of properly configuring RMAN backups. Additionally, the document outlines specific commands and considerations for managing RMAN settings and showcases examples of backup operations.
RMAN in 12c: The Next Generation (PPT)
- 1. RMAN in 12c: The Next Generation Presented by : Gustavo René Antúnez Oracle DBA The Pythian Group April, 2014
- 2. About Pythian • Recognized Leader: – Global industry-leader in remote database administration services and consulting for Oracle, Oracle Applications, MySQL and Microsoft SQL Server – Work with over 250 multinational companies such as Forbes.com, Fox Sports, Nordion and Western Union to help manage their complex IT deployments • Expertise: – One of the world’s largest concentrations of dedicated, full-time DBA expertise. Employ 9 Oracle ACEs/ACE Directors. – Hold 7 Specializations under Oracle Platinum Partner program, including Oracle Exadata, Oracle GoldenGate & Oracle RAC • Global Reach & Scalability: – Around the clock global remote support for DBA and consulting, systems administration, special projects or emergency response
- 3. About Me – Oracle DBA – Part of the First Oracle Associate Group • Started with Version 9.2 in 2004 – With The Pythian Group for the last year – Movie Fanatic – Music Lover – Bringing the best from México (Mexihtli) to the rest of the world and in the process photographing it :) – reneantunez.com – @grantunez • #CLV14
- 4. Where do I come from?
- 5. How did I get to be a DBA
- 6. Happiest Job of 2014!* *http://www.forbes.com/sites/susanadams/2014/03/20/the-happiest-and-unhappiest-jobs-in-2014/ Work-life balance Relationship with boss and co- workers Daily tasks Job resources Field will grow by 15% between 2012 and 2022 DBA can be the key driver of success
- 7. What is a Pluggable Database? • Container database (CDB) is an Oracle database that includes zero, one, or many customer-created Containers or Pluggable Databases. • A pluggable Database (PDB) is a user-created container holding the data and code for your specific applications
- 8. What is a Pluggable Database? Root (CDB$ROOT) CDB hrpdb salespdb Seed (PDB$SEED) CDB Administrator Sales Application HR Application PDB Administrator for hrpdb PDB Administrator for salespdb Logical Physical Database Control Files Data Files Online Redo Log 10101 10101 Archived Redo Log Flashback Log
- 10. What is RMAN? • Oracle utility to perform backup and recovery, available since version 8 RMAN Utility Channel Target DB Server Session MML DISK Executable found in $ORACLE_HOME/bin recover.bsq (library file)
- 11. What do you need to backup? • Critical – Data files – Control files – Archived Redo logs (If Inconsistent Backup taken) – Root DB (12c) • In line with the DR strategy – Parameter File (pfile or spfile) – Block Change Tracking File – ORACLE_HOME/GRID_HOME/ configuration files – tnsnames.ora / listener.ora/ sqlnet.ora Not through RMAN
- 12. How does an RMAN backup work? Datafiles 1 MB 1 MB 1 MB 1 MB 1 MB 1 MB 1 MB 1 MB 1 MB 1 MB 1 MB 1 MB 1 MB 1 MB 1 MB 1 MB Input I/O Buffers Validation Compression Encryption 1 MB 1 MB 1 MB 1 MB Channel Output Buffers Backup Piece 1 2 3 4 Read Phase Copy Phase Write Phase
- 13. Benefits of the RMAN Catalog RMAN Target DB Target DB Target DB Catalog DB Repository for multiple incarnations of a single target metadata about RMAN backups Store RMAN backup scripts Another Database to keep control off It can keep backup history longer than the controlfile can keep it (Depends on value of CONTROL_FILE_RECORD_KEEP_TIME) Centralized Reporting Purposes
- 14. What to consider before configuring your RMAN backups • Fast Recovery Area (FRA) Size DB BackupFRA Disk Quota Size of Incremental BU Size of (n+1) days of Archived Redo logs Size of controlfile Size of Online Redo* # of Groups Size of Flashback logs DB_RECOVERY_FILE_DEST_SIZE DB_RECOVERY_FILE_DEST Useful views • V$FLASH_RECOVERY_AREA_USAGE • V$RECOVERY_FILE_DEST
- 15. What to consider before configuring your RMAN backups • Catalog or no catalog Database • ARCHIVELOG vs NOARCHIVELOG • CONTROL_FILE_RECORD_TIME_KEEP • Set NLS parameters accordingly – Values from view V$NLS_PARAMETERS – NLS_DATE_FORMAT='DD-MON-YYYY HH24:MI:SS’ – NLS_LANG=american_america.we8iso8859p1
- 16. Configuring RMAN Default Settings • CONFIGURE DEFAULT DEVICE TYPE TO DISK; – When formatting your output, be sure to always include the DBID • CONFIGURE CONTROLFILE AUTOBACKUP ON; • CONFIGURE ARCHIVELOG DELETION POLICY TO BE BACKED UP 3 TIMES TO DISK; %I %d_%I_%s_%T_%t %U
- 17. 12c New features • Support for multitenant container databases and pluggable databases • SYSBACKUP Privilege • SQL Interface Improvements • Active Database Duplication Improvements • Recovering Tables and Table Partitions from RMAN Backups
- 18. SYSBACKUP Privilege • Can connect with the “as sysbackup” • OS System Groups (OSDBA or OSBACKUPDBA) • For Windows need to have set SQLNET.AUTHENTICATION_SERVICES=(NTS) CONNECT / AS SYSBACKUP CONNECT /@cdb1 AS SYSBACKUP orapwd FILE='orapwcdb1' ENTRIES=5 DBUNIQUENAME='cdb1' SYSBACKUP=y
- 19. SYSBACKUP Privilege • Operations Allowed : – STARTUP/ SHUTDOWN – ALTER DATABASE/ SYSTEM/ SESSION/ TABLESPACE – FLASHBACK DATABASE/ RESUMABLE – DROP DATABASE/ TABLESPACE/ RESTORE POINT (including GUARANTEED restore points)
- 20. SYSBACKUP Privilege • Operations Allowed : – SELECT • X$ tables (that is, the fixed tables) • V$ and GV$ views (that is, the dynamic performance views) • APPQOSSYS.WLM_CLASSIFIER_PLAN • SYSTEM.LOGSTDBY$PARAMETERS – EXECUTE • SYS.DBMS_BACKUP_RESTORE • SYS.DBMS_RCVMAN • SYS.DBMS_DATAPUMP
- 21. SUPPORT FOR MULTITENANT CONTAINER DATABASES AND PLUGGABLE DATABASES • Provides full backup and recovery support, not only for your container database, but also for one or all of your pluggable databases • Backup of the CDB will include – CDB$ROOT, PDB$SEED and ALL PDBs • Backup of the PDB will include – Only the PDB connected to – Important to have control file autobackup on
- 22. SUPPORT FOR MULTITENANT CONTAINER DATABASES AND PLUGGABLE DATABASES • Backing up the CDB and all of its PDBs rman target sys/oracle@cdb1 connected to target database: CDB1 (DBID=808250731) RMAN backup database plus archivelog; • Backing up just one PDB rman target sys/oracle@pdb1 connected to target database: CDB1 (DBID=808250731) RMAN backup database; • Backing up the root rman target sys/oracle@cdb1 connected to target database: CDB1 (DBID=808250731) RMAN backup database root;
- 23. • Restoring a PDB oracle $ rman target sys/oracle@cdb1 connected to target database: CDB1 (DBID=808250731) RMAN RESTORE PLUGGABLE DATABASE PDB1; RMAN RECOVER PLUGGABLE DATABASE PDB1; RMAN ALTER PLUGGABLE DATABASE PDB1 OPEN; SUPPORT FOR MULTITENANT CONTAINER DATABASES AND PLUGGABLE DATABASES
- 24. • Be careful when dropping a PDB RMAN drop pluggable database PDB1; Statement processed RMAN RESTORE PLUGGABLE DATABASE PDB1; Starting restore at 13/02/2014 11:18:26 allocated channel: ORA_DISK_1 channel ORA_DISK_1: SID=41 device type=DISK RMAN-00571: =========================================================== RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS =============== RMAN-00571: =========================================================== RMAN-03002: failure of restore command at 02/13/2014 11:18:27 RMAN-06813: could not translate pluggable database PDB1 SUPPORT FOR MULTITENANT CONTAINER DATABASES AND PLUGGABLE DATABASES
- 25. • Viewing the Definition of your Containers connected to target database: CDB1 (DBID=808250731) RMAN report schema; =========================== File Size(MB) Tablespace RB segs Datafile Name ---- -------- -------------------- ------- ------------------------ 1 790 SYSTEM *** /u01/app/oracle/oradata/CDB1/datafile/ o1_mf_system_9c522mbz_.dbf 5 250 PDB$SEED:SYSTEM *** /u01/app/oracle/oradata/CDB1/datafile/ o1_mf_system_9c5257ms_.dbf … 7 590 PDB$SEED:SYSAUX *** /u01/app/oracle/oradata/CDB1/datafile/ o1_mf_sysaux_9c5257mj_.dbf 8 260 PDB1:SYSTEM *** /u01/app/oracle/oradata/CDB1/ EDDDC5E35CF7216DE043344EB2C0AB6F/datafile/o1_mf_system_9c52fqt1_.dbf SUPPORT FOR MULTITENANT CONTAINER DATABASES AND PLUGGABLE DATABASES
- 26. • Viewing the definition of your backups RMAN list backup tag TAG20140125T164644;; List of Backup Sets =================== BS Key Type LV Size Device Type Elapsed Time Completion Time ------- ---- -- ---------- ----------- ------------ --------------- 11 Full 1.34G DISK 00:01:19 25-JAN-14 BP Key: 11 Status: AVAILABLE Compressed: NO Tag: TAG20140125T164644 Piece Name: /u01/app/oracle/fast_recovery_area/CDB1/backupset/2014_01_25/ o1_mf_nnndf_TAG20140125T164644_9g8m74qz_.bkp List of Datafiles in backup set 11 File LV Type Ckp SCN Ckp Time Name ---- -- ---- ---------- --------- ---- 1 Full 2230796 25-JAN-14 /u01/app/oracle/oradata/CDB1/datafile/o1_mf_system_9c522mbz_.dbf 3 Full 2230796 25-JAN-14 /u01/app/oracle/oradata/CDB1/datafile/o1_mf_sysaux_9c520w6w_.dbf … SUPPORT FOR MULTITENANT CONTAINER DATABASES AND PLUGGABLE DATABASES
- 27. • Viewing the definition of your backups (continued) … List of Datafiles in backup set 12 Container ID: 3, PDB Name: PDB1 File LV Type Ckp SCN Ckp Time Name ---- -- ---- ---------- --------- ---- 8 Full 2230931 25-JAN-14 /u01/app/oracle/oradata/CDB1/EDDDC5E35CF7216DE043344EB2C0AB6F/ datafile/o1_mf_system_9c52fqt1_.dbf 9 Full 2230931 25-JAN-14 /u01/app/oracle/oradata/CDB1/EDDDC5E35CF7216DE043344EB2C0AB6F/ datafile/o1_mf_sysaux_9c52fqvt_.dbf … List of Datafiles in backup set 13 Container ID: 2, PDB Name: PDB$SEED File LV Type Ckp SCN Ckp Time Name ---- -- ---- ---------- --------- ---- 5 Full 1732663 18-DEC-13 /u01/app/oracle/oradata/CDB1/datafile/o1_mf_system_9c5257ms_.dbf 7 Full 1732663 18-DEC-13 /u01/app/oracle/oradata/CDB1/datafile/o1_mf_sysaux_9c5257mj_.dbf SUPPORT FOR MULTITENANT CONTAINER DATABASES AND PLUGGABLE DATABASES
- 28. Recovering Tables and Table Partitions from RMAN Backups Target Database DB in read-write mode ARCHIVELOG MODE RMAN backup as existed at the point in time 1 Gigabyte extra in memory for the auxiliary database 12.1, you need to use a SERVICE_NAME
- 29. Recovering Tables and Table Partitions from RMAN Backups oracle $ rman target sys/oracle@cdb1 connected to target database: CDB1 (DBID=808250731) RMAN RECOVER TABLE 'TEST'.'RENE' OF PLUGGABLE DATABASE PDB1 2 UNTIL TIME to_date('26-JAN-2014 17:08:20','dd-MON-yyyy hh24:mi:ss') 3 AUXILIARY DESTINATION '/u01/app/oracle/exports' 4 REMAP TABLE 'TEST'.'RENE':'RENE_RCV';
- 30. SQL Interface Improvements • You no longer need to enclose the SQL command in quotes oracle $ rman target sys/oracle@cdb1 connected to target database: CDB1 (DBID=808250731) RMAN select name from v$database; NAME --------- CDB1 RMAN select a.con_id,a.file_id,substr(a.file_name, instr(a.file_name, '/',-1)+1) file_name from cdb_data_files a; CON_ID FILE_ID FILE_NAME ---------- ---------- ------------------------------------------------------------ 2 5 o1_mf_system_9c5257ms_.dbf … 9 rows selected.
- 31. Active Database Duplication Improvements • It is defined as a duplicate database that is created over a network without restoring backups Source Host Source Database Source Instance Auxiliary Instance Duplicate Database Destination Hostpush-based active duplication pull-based active duplication Connect Target Connect Auxiliary RMAN Client
- 32. Active Database Duplication Improvements oracle $ rman target sys/oracle@cdb1 auxiliary sys/oracle@cdb2 connected to target database: CDB1 (DBID=808250731) connected to auxiliary database: CDB2 (not mounted) RMAN DUPLICATE TARGET DATABASE TO cdb2 FROM ACTIVE DATABASE PASSWORD FILE USING COMPRESSED BACKUPSET; Starting Duplicate Db at 26/01/2014 22:25:43 using target database control file instead of recovery catalog allocated channel: ORA_AUX_DISK_1 channel ORA_AUX_DISK_1: SID=20 device type=DISK current log archived
- 33. Active Database Duplication Improvements contents of Memory Script: { backup as copy reuse targetfile '/u01/app/oracle/product/12.1.0/db_1/dbs/orapwcdb1' auxiliary format '/u01/app/oracle/product/12.1.0/db_1/dbs/orapwcdb2' ; } … contents of Memory Script: { … shutdown clone immediate; startup clone force nomount restore clone from service 'cdb1' using compressed backupset primary controlfile; alter clone database mount; } … Starting restore at 26/01/2014 22:25:52 allocated channel: ORA_AUX_DISK_1 channel ORA_AUX_DISK_1: starting datafile backup set restore channel ORA_AUX_DISK_1: using compressed network backup set from service cdb1 channel ORA_AUX_DISK_1: restoring control file channel ORA_AUX_DISK_1: restore complete, elapsed time: 00:00:03 output file name=/u01/app/oracle/oradata/CDB2/controlfile/ o1_mf_9c524smo_.ctl
- 34. EM12c and RMAN 12c • You can manage most of RMAN’s features via a GUI interface. • Using EM 12c also removes the need to continuously maintain RMAN scripts and crontab jobs • View a more friendly report of your backups • You need to have a credentialed OS account • Targets à Databases à DB_NAME àAvailability àBackupRecovery.
- 35. Scheduling a Full Backup
- 36. Viewing Backup Reports RMAN list backup tag TAG20140212T191237; List of Backup Sets =================== BS Key Type LV Size Device Type Elapsed Time Completion Time ------- ---- -- ---------- ----------- ------------ ------------------- 67 Full 1.88G DISK 00:02:41 12/02/2014 19:15:19 BP Key: 67 Status: AVAILABLE Compressed: NO Tag: TAG20140212T191237 Piece Name: /u01/app/oracle/fast_recovery_area/CDB1/backupset/2014_02_12/ o1_mf_nnndf_TAG20140212T191237_9hrbjrqd_.bkp List of Datafiles in backup set 67 File LV Type Ckp SCN Ckp Time Name ---- -- ---- ---------- ------------------- ---- 1 Full 3220602 12/02/2014 19:12:38 /u01/app/oracle/oradata/CDB1/datafile/ o1_mf_system_9c522mbz_.dbf 3 Full 3220602 12/02/2014 19:12:38 /u01/app/oracle/oradata/CDB1/datafile/ o1_mf_sysaux_9c520w6w_.dbf 4 Full 3220602 12/02/2014 19:12:38 /u01/app/oracle/oradata/CDB1/datafile/ o1_mf_undotbs1_9c524cnr_.dbf 6 Full 3220602 12/02/2014 19:12:38 /u01/app/oracle/oradata/CDB1/datafile/ o1_mf_users_9c524bjm_.dbf
- 37. Viewing Backup Reports BS Key Type LV Size Device Type Elapsed Time Completion Time ------- ---- -- ---------- ----------- ------------ ------------------- 69 Full 680.13M DISK 00:00:24 12/02/2014 19:16:32 BP Key: 69 Status: AVAILABLE Compressed: NO Tag: TAG20140212T191237 Piece Name: /u01/app/oracle/fast_recovery_area/CDB1/ EDDDB886A1191F07E043344EB2C0BE27/backupset/2014_02_12/ o1_mf_nnndf_TAG20140212T191237_9hrbq8lm_.bkp List of Datafiles in backup set 69 Container ID: 2, PDB Name: PDB$SEED File LV Type Ckp SCN Ckp Time Name ---- -- ---- ---------- ------------------- ---- 5 Full 1732663 18/12/2013 22:52:25 /u01/app/oracle/oradata/ CDB1/datafile/o1_mf_system_9c5257ms_.dbf 7 Full 1732663 18/12/2013 22:52:25 /u01/app/oracle/oradata/ CDB1/datafile/o1_mf_sysaux_9c5257mj_.dbf
- 39. Group Backups • Great advantage as you have to set up the following only once per group: – Backup Storage Settings – Recovery Catalog Settings – Backup Type – Frequency • Administrative Groups – Adding a new target to it, it will automatically use these properties
- 40. Group Backups
- 41. Group Backups
- 42. Group Backups
- 43. FIT-ACER • F – Focus (SLOW DOWN! Are you ready?) • I – Identify server/DB name, time, authorization • T – Type the command (do not hit enter yet) • A – Assess the command (SPEND TIME HERE!) • C – Check the server / database name again • E – Execute the command • R – Review and document the results
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